Acquisition and Upgrade of X-ray Diffractometers at the University of Maryland

马里兰大学 X 射线衍射仪的购置和升级

• 批准号: 9871314
• 负责人: Bruce Jarvis
• 金额: $ 26.53万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9871314&HistoricalAwards=false
• 关键词: Acquisition; Upgrade; ray; Diffractometers; University

This award from the Chemistry Research Instrumentation and Facilities (CRIF) Program and the Major Research Instrumentation (MRI) Program will enable the Departments of Chemistry and Biochemistry, Physics and Materials Engineering at The University of Maryland in College Park to acquire a CCD single crystal X-ray diffraction system, a powder X-ray diffraction system with variable temperature stage, and to upgrade an existing diffractometer. This equipment will enhance research in a number of areas including the following: (1) synthesis, structures and properties of solid state sulfides, selenides and oxysulfides, (2) insertion studies of transition metals into p-block polyanions, (3) studies of `colossal` magnetoresistance in doped rare-earth manganese perovskites, (4) studies of metal-thiometalate cooperativity in the transport of hazardous metals in anoxic ground waters, (5) self-assembled ionophores, and (6) organometallic chemistry and synthetic methods. The X-ray diffractometer is used to make accurate and precise measurements of the full three dimensional structure of a molecule. The information obtained gives the precise values of all the bond distances and bond angles of a given molecule and it gives accurate information about the spatial arrangement of the molecule relative to the neighboring molecules.

化学研究工具和设施（CRIF）计划和主要研究工具（MRI）计划的奖项将使马里兰州大学公园的马里兰州大学公园的化学和生物化学，物理和材料工程部门能够获得CCD单晶X射线衍射系统，具有可变温度阶段的粉末X射线衍射系统，可变的温度阶段，并逐渐扩大差异。 该设备将在许多领域中加强研究，包括以下各个方面：（1）固态硫化物，硒化合物和氧硫化物的合成，结构和特性，（2）将过渡金属的插入研究插入到p块多裂中，（3）coRossal'Colossal`粘液含量的研究中的含量稀有型稀有型含量的含量稀有型含有稀有的矿物质含量的含量（4）。 （5）自组装离子载体和（6）有机金属化学和合成方法中的危险金属。 X射线衍射仪用于对分子的整个三维结构进行准确而精确的测量。获得的信息给出了给定分子的所有键距离和键角的精确值，并提供了有关该分子相对于邻近分子的空间排列的准确信息。